The “closed” chiral symmetry and its application to tetraquark

Chen, Hua-Xing

doi:10.1140/epjc/s10052-012-2204-x

Cited by 15 publications

(13 citation statements)

References 49 publications

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“…[330,331] based on the results of Refs. [332,333,334,335,336,337,338,339,340,341,36,342,343,344,345] which studied light baryon, tetraquark and dibaryon currents. We pick out two of them and discuss their internal color and flavor structure:…”

Section: Pentaquark Currentsmentioning

confidence: 99%

The hidden-charm pentaquark and tetraquark states

et al. 2016

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In the past decade many charmonium-like states were observed experimentally. Especially those charged charmoniumlike Z c states and bottomonium-like Z b states can not be accommodated within the naive quark model. These charged Z c states are good candidates of either the hidden-charm tetraquark states or molecules composed of a pair of charmed mesons. Recently, the LHCb Collaboration discovered two hidden-charm pentaquark states, which are also beyond the quark model. In this work, we review the current experimental progress and investigate various theoretical interpretations of these candidates of the multiquark states. We list the puzzles and theoretical challenges of these models when confronted with the experimental data. We also discuss possible future measurements which may distinguish the theoretical schemes on the underlying structures of the hidden-charm multiquark states.

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Section: Pentaquark Currentsmentioning

confidence: 99%

The hidden-charm pentaquark and tetraquark states

et al. 2016

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“…This method has been systematically applied to study light baryon and tetraquark currents in Refs. [183][184][185][186][187][188][189][190][191], and applied to study strong decay properties of the P c and X(6900) states in Refs. [192,193].…”

Section: Decay Properties Through the Fierz Rearrangementmentioning

confidence: 99%

Hadronic molecules in B decays

Chen

2021

Preprint

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There are eighteen possibly existing D ( * ) D( * ) , D ( * ) K( * ) , and D ( * ) D ( * )− s hadronic molecular states. We construct their corresponding interpolating currents, and calculate their masses and decay constants using QCD sum rules. Based on these results, we calculate their relative production rates in B and B * decays through the current algebra, and calculate their relative branching ratios through the Fierz rearrangement, as summarized in Table III. Our results support the interpretations of the X(3872), Zc(3900), Zc(4020), and X0(2900) as the molecular states D D * of J

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“…Later we applied the same method to systematically study various tetraquark, pentaquark, dibaryon and baryonium states [420,424,425,426,427,428,429,430,431,432,433,434,435,436,437,438,439,440,267]. Since the internal structure of multiquark states is quite complicated, we also applied this method to systemically conventional mesons and baryons [441,442,443,444,445,446,447,448,449,450,451].…”

Section: Interpolating Currents and Their Relations To Physical Statesmentioning

confidence: 99%

Pentaquark and Tetraquark states

Liu,

Chen,

Chen

et al. 2019

Preprint

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The past seventeen years have witnessed tremendous progress on the experimental and theoretical explorations of the multiquark states. The hidden-charm and hidden-bottom multiquark systems were reviewed extensively in Ref. [1]. In this article, we shall update the experimental and theoretical efforts on the hidden heavy flavor multiquark systems in the past three years. Especially the LHCb collaboration not only confirmed the existence of the hidden-charm pentaquarks but also provided strong evidence of the molecular picture. Besides the well-known XY Z and P c states, we shall discuss more interesting tetraquark and pentaquark systems either with one, two, three or even four heavy quarks. Some very intriguing states include the fully heavy exotic tetraquark states QQ Q Q and doubly heavy tetraquark states QQq q, where Q is a heavy quark. The QQ Q Q states may be produced at LHC while the QQq q system may be searched for at BelleII and LHCb. Moreover, we shall pay special attention to various theoretical schemes such as the chromomagnetic interaction (CMI), constituent quark model, meson exchange model, heavy quark and heavy diquark symmetry, QCD sum rules, Faddeev equation for the three body systems, Skyrme model and the chiral quark-soliton model, and the lattice QCD simulations. We shall emphasize the model-independent predictions of various models which are truly/closely related to Quantum Chromodynamics (QCD). For example, the chromomagnetic interaction arises from the gluon exchange which is fundamental and universal in QCD and responsible for the mixing and mass splitting of the conventional mesons and baryons within the same multiplet. The same CMI

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The “closed” chiral symmetry and its application to tetraquark

Cited by 15 publications

References 49 publications

The hidden-charm pentaquark and tetraquark states

The hidden-charm pentaquark and tetraquark states

Hadronic molecules in B decays

Pentaquark and Tetraquark states

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